Ag nanoparticles drop-casting modification of screen-printed electrodes for the simultaneous voltammetric determination of Cu(II) and Pb(II)

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Title:	Ag nanoparticles drop-casting modification of screen-printed electrodes for the simultaneous voltammetric determination of Cu(II) and Pb(II)
Author:	Pérez-Ràfols, Clara; Bastos-Arrieta, Julio; Serrano i Plana, Núria; Díaz Cruz, José Manuel; Ariño Blasco, Cristina; Pablo, Joan de; Esteban i Cortada, Miquel
Other authors:	Universitat de Barcelona
Abstract:	A new silver nanoparticle modified screen-printed electrode was developed and applied to the simultaneous determination of Pb(II) and Cu(II). Two different types of silver nanoparticles with different shapes and sizes, Ag nanoseeds and Ag nanoprisms, were microscopically characterized and three different carbon substrates, graphite, graphene and carbon nanofibers, were tested. The best analytical performance was achieved for the combination of Ag nanoseeds with a carbon nanofiber modified screen-printed electrode. The resulting sensor allowed the simultaneous determination of Pb(II) and Cu(II) at trace levels and its applicability to natural samples was successfully tested with a groundwater certified reference material, presenting high reproducibility and trueness.
Subject(s):	-Nanopartícules -Argent -Ions metàl·lics -Anàlisi electroquímica -Nanoparticles -Silver -Metal ions -Electrochemical analysis
Rights:	cc-by (c) Pérez-Ràfols, Clara et al., 2017 http://creativecommons.org/licenses/by/3.0/es
Document type:	Article Article - Published version
Published by:	MDPI
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